telematrix spectrum phone

Links to manufacturer's user guide:


Feature Overview:

  • Displays date, time, name & number of caller (when provided)
  • 4-Step display brightness/contrast adjustment
  • One touch voice mail retrieval key
  • Flashing message waiting indicator
  • Call Log (100 Maximum Records)
  • Speakerphone
  • 11 programmable speed dial keys
  • 8-Step Volume Bar for controlling Speaker/Handset/Headset Volume
  • Headset Feature With Modular and 2.5mm Headset connectivity ports
  • Separate HEADSET ON/OFF line activation key (with LED indicator)
  • Freedom to switch between headset and handset operation
  • MUTE key disables the speaker/headset/handset microphone
  • Flash Key
  • Last Number Redial
  • Hold Key with LED indicator
  • Modem Port on the phone base
  • Powered by telephone line - no AC adapter required
  • Disconnect Key


Date and time will automatically be set or updated on your phone when a call is received. You must let your phone ring twice before it captures the new date and time. Once you see the new date and time, you can pick up the call.

This telephone has two settings for Hold: “System” or “Line”. By default, they will be set to “System” hold.

If “System” hold is set:
To place a call on hold: Press Hold button; wait for confirmation tone (3 beeps); lay handset aside. The light above the Hold button will illuminate. Party on hold will hear music.

To Retrieve: Press Hold button.

Note: Any Dterm telephone with this line appearance can retrieve the call while it's either ringing or on hold.

OPTIONAL: “Line” hold. This phone may be set to “line” hold by switching a setting on the bottom of the phone. When set to line hold, held parties will NOT hear music while on hold.

To place a call on hold: Press Hold button and lay handset aside.

To Retrieve: Place handset in cradle. Phone will ring, and when answered, held party will be retrieved.

To place call on hold and consult with third party (regardless of whether System or Line hold is set): Ask party to hold (but do not press HOLD); press FLASH, hear broken dial tone. Dial number of party you wish to consult. Converse with third party; when they hang up, you will automatically be connected with holding party. If third party does not answer, reconnect to holding party by pressing FLASH again.

Note: If voice mail answers the call, press 9, 9 and wait for voice mail to hang up. The caller will come back on the line.

To transfer a call:
Press Flash. Broken dial tone indicates caller is placed on hold. Dial destination number, wait one second for call to connect, and then hang up.

(Optional): you may stay on the line to announce transfer of call. If party does not answer or line is busy, press FLASH again to return to holding party. (*see below)

To consult with a third party while you are engaged on a call:
Press FLASH to place first party on hold. Dial second party; converse when they answer. To return to first party, press FLASH. Second party is automatically placed on hold. (*see below)To continue to alternate between calls; continue to press FLASH.

*If voice mail answers the call, press 9, 9 and wait for voice mail to hang up. The caller will come back on the line.

To forward all calls (CFA - Call Forward All): (forwards calls immediately)
Lift handset, hear dial tone. Press *7; hear broken dial tone. Dial number to which calls are to be forwarded; hear confirmation tone; hang up. NOTE: While in this state, your phone will ring 1/2 of a ring for each incoming call as a reminder, but you will not be able to answer it until the Call Forward All is cancelled at this phone.

To cancel "CFA": Lift handset; hear dial tone. Dial #7; hear confirmation tone; hang up.

To set Call Forward Busy/No Answer (CFBNA): (Calls are forwarded immediately if line is busy or after approximately four rings if not answered) Lift handset; hear dial tone. Dial *8; hear broken dial tone. Dial number to which calls are to be forwarded; hear confirmation tone; hang up.

To Cancel "CFBNA": Lift handset; hear dial tone. Dial #8; hear confirmation tone; hang up.

NOTE: Calls may be forwarded to a campus, local, or long distance telephone number. If forwarded to a long distance number, long distance charges will be billed to your phone. With CFA activated, a telephone can receive calls only from the extension to which it is forwarded. Any combination of call forwarding may occur, up to five times to phones served by a single telephone switch service area). CFA and CFBNA may be activated at the same time. When both are set, CFA overrides until canceled, then CFBNA takes effect.

REDIAL - To Redial number you last dialed: Lift handset or press Speaker, press Redial.

CONFERENCE CALLING - To set up three-way conferencing: Establish first call (incoming or outgoing); ask party to hold (but do NOT press HOLD). Press FLASH, receive interrupted dial tone (caller is on hold). Dial third party. (If no answer or busy, press FLASH again to reconnect to held party). When answered, press FLASH again. Three-way conference is established. If one party hangs up, other two remain connected.


(Group) To Pick up call from within preprogrammed group:
Lift handset, dial *6.

(Directed) To pick up call from specific phones within area: Lift handset, dial #6, plus extension number that is ringing. (It is not necessary to be in a preprogrammed pickup group to use this feature).

Notes: If you cannot intercept a call within a call pickup group by dialing *6, the call coming into the station may be a "call back", which cannot be intercepted by another telephone. If you hear a reorder tone (a fast busy) when trying to intercept a call with *6, another phone in the pickup group may have intercepted the call first, or the extension trying to pick up the call may not have been programmed into the pickup group. In the latter case, you could intercept the call with #6 plus the ringing extension number.

To mute a call:
Press the MUTE button (the display will change from “In Use” to “Mute”). Press the MUTE button again to restore two-way conversation (display will return to “In Use”).

This feature allows you to request a "call back" if you encounter a busy University extension. To set Call Back feature (if line is busy): After dialing extension and hearing busy signal, press Flash, dial *9; hear high pitched confirmation tone; hang up. When BOTH telephones become idle, your telephone will ring. Lift handset (or press Speaker); call will ring until called party answers.

Note: Only one Call Back request can be set to or from any extension at a time. Additional attempts will be indicated by a fast busy signal. Call Back is automatically canceled if the telephone that set the Call Back doesn't answer within approximately three rings.

To cancel Call Back request before ringing: Lift handset; dial #9; hang up.

This feature allows a call to be placed on hold to be retrieved from any University extension.

· To Park a Call: Ask caller to hold; press FLASH, then dial *0. Caller is placed on hold.

· To retrieve a parked call from a remote telephone: Lift handset; Dial #0, plus the extension number where the call was parked. You are connected with the caller.

· To retrieve a parked call from original telephone: Lift handset; Dial Park code *0. You are connected with the caller.


Ringer volume: The ring volume switch is located on the bottom of the phone and can be set at High, Low or Off. The ring volume switch provides a fixed desired ring volume. (Tab must be removed to access this switch)

Speaker Volume: Volume rocker button is located on the front of the phone. To increase volume, press the right side of the control. To decrease volume, press on the left side of the control.

To change the volume of the handset while on an active call, press the Volume rocker button on front of phone until desired volume is reached. This setting is automatically saved at that level for subsequent calls.

This telephone model includes 11 one touch speed dialing buttons, located along the right side of the phone.

Programming speed dial buttons:

  1. Do Not Lift handset.
  2. Press the STORE button once.
  3. Press the speed dial button location you want to program.
  4. Press STORE button again.
  5. Enter the number you wish to store, exactly as it should be dialed (include 9 if off campus, 9,1 if long distance, etc., and include Flash or Pause where needed; 32 characters maximum).
  6. Press STORE again.

    (Optional) Enter the name associated with the number being programmed. See Manual Name Entry below to enter characters (12 characters maximum).

  7. Press STORE again.
  8. To continue programming speed dial buttons, repeat steps 3 – 7.
  9. To exit the program mode, press “DISC”.

Manual Name Entry From Keypad


Once Twice Three Times Four Times Five Times Six Times
No. 1 1          
No. 2 A B C 2    
No. 3 D E F 3    
No. 4 G H I 4    
No. 5 J K L 5    
No. 6 M N O      
No. 7 P Q R S 7  
No. 8 T U V 8    
No. 9 W X Y Z 9  
No. 0 0          
No. * adds space = *      
No. # . : ( ) #


To Dial A Phone Number in speed dial:

  1. Lift handset or press Speaker
  2. Press desired speed dial button
  3. The number will be displayed and dialed automatically.


  • Speed dial buttons may be labeled by removing the clear plastic keycap (by pulling straight up). Place the label on the key and replace keycap. Labels are included with new phones, or are available by contacting ITS  335-2949.

Helpful hints: If you are having trouble removing the key caps from the speed dial buttons, we have found that a standard “claw” type staple remover works quite well

Incoming call information will be stored in the call log feature of your phone, to a maximum of 100 records. Your display will indicate how many new calls as well as how many total calls are stored.

Viewing the Call Log: Press the or scrolling keys

Deleting Call Log entries: Display the entry you wish to delete, press the “Delete” key once and you will be prompted with “Delete?”. If you press the “Delete” a second time it will be erased from the log.

Deleting ALL Call Log entries: While viewing the Call Log, press and hold down the “Delete” key after about 5 seconds you will be prompted with “Delete All?”. If you press the “Delete” a second time ALL call log entries will be erased from the log.

Dialing from Call Log entries: Display the entry you wish to dial from, and note the format of the entry. If it is displayed as it should be dialed, simply press Dial. If it is not (for example you need to insert a 9 and/or remove the area code), you may activate the edit mode by pressing a digit on the keypad. Then using the Delete button, remove any unneeded digits and/or add any using the key pad. When the entry is displayed as it should be, then press Dial.

Note: When your call log reaches the maximum of 100 entries, subsequent entries will overwrite the oldest record.

If you have voice mail programmed on your phone, the red oval VoiceMail button will serve two purposes. First, the light will illuminate and flash for new messages. Second, you may press the button to call into voice mail to retrieve messages or access other voice mail functions.

Allows you to use your line for "dial-up" modems.


· Problem: No dial tone. Are all cords plugged in tight? Is line cord plugged into correct portion of jack? Unplug line cord from back of telephone and plug it back in; this acts as a reset.

· Problem: Telephone doesn't ring. Is ringer turned up? Is "call forwarding all calls" (CFA) set?

· Problem: Speed dials not working. Try reprogramming buttons to see if you may have lost memory for some reason.

Problem: No light or music when call placed on hold. This telephone has two settings for Hold: “System” or “Line”. By default, the phone will be set to “System” hold. If this switch, located on the bottom of the phone, is set to the “Line” position, the Hold LED will not function, and the caller will not hear music while on hold.


The following are programming options and their default settings. These settings are the recommended choices for use with the University of Iowa telephone system.

The Message Waiting Indicator will be set to LED. This makes the light flash, making it more visible.

The HOLD button is programmed to SYSTEM hold. This enables music on hold functionality.

Access number set to 9

Area code set to 319

Flash time set to 600ms (changing this is not recommended)

Pause time set to 3.6s

Voice mail button programmed for 51000

Live dial pad set to OFF (this feature may be enabled by customer preference without adverse affects)

Caller ID information will appear in your display AFTER the phone has rung a complete ring. It is also possible that if you answer too quickly you will hear a brief “modem-like” tone as the Caller ID data is delivered. For both of these reasons, we recommend that you wait to see the call information in your display before answering the phone.

Other problems or questions? Please contact ITS for assistance: (319) 335-2945 or email

NOTE:This manual applies to the University of Iowa telephone system on the main and Oakdale campuses. It is not applicable to The University of Iowa Hospitals and Clinics telephone system.


Article number: 
Last updated: 
September 15, 2021